--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/diagnostic-color.h	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,65 @@
+/* Copyright (C) 2013-2017 Free Software Foundation, Inc.
+   Contributed by Manuel Lopez-Ibanez <manu@gcc.gnu.org>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* Based on code from: */
+/* grep.c - main driver file for grep.
+   Copyright (C) 1992-2017 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.
+
+   Written July 1992 by Mike Haertel.  */
+
+#ifndef GCC_DIAGNOSTIC_COLOR_H
+#define GCC_DIAGNOSTIC_COLOR_H
+
+/* Whether to add color to diagnostics:
+   o DIAGNOSTICS_COLOR_NO: never
+   o DIAGNOSTICS_COLOR_YES: always
+   o DIAGNOSTICS_COLOR_AUTO: depending on the output stream.  */
+typedef enum
+{
+  DIAGNOSTICS_COLOR_NO       = 0,
+  DIAGNOSTICS_COLOR_YES      = 1,
+  DIAGNOSTICS_COLOR_AUTO     = 2
+} diagnostic_color_rule_t;
+
+const char *colorize_start (bool, const char *, size_t);
+const char *colorize_stop (bool);
+bool colorize_init (diagnostic_color_rule_t);
+
+inline const char *
+colorize_start (bool show_color, const char *name)
+{
+  return colorize_start (show_color, name, strlen (name));
+}
+
+#endif /* ! GCC_DIAGNOSTIC_COLOR_H */